23934721 has 2 divisors, whose sum is σ = 23934722. Its totient is φ = 23934720.

The previous prime is 23934689. The next prime is 23934727. The reversal of 23934721 is 12743932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23902321 + 32400 = 4889^2 + 180^2 .

It is a cyclic number.

It is not a de Polignac number, because 23934721 - 2⁵ = 23934689 is a prime.

It is not a weakly prime, because it can be changed into another prime (23934727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11967360 + 11967361.

It is an arithmetic number, because the mean of its divisors is an integer number (11967361).

Almost surely, 2^23934721 is an apocalyptic number.

It is an amenable number.

23934721 is a deficient number, since it is larger than the sum of its proper divisors (1).

23934721 is an equidigital number, since it uses as much as digits as its factorization.

23934721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 31.

The square root of 23934721 is about 4892.3124389188. The cubic root of 23934721 is about 288.1881526753.

The spelling of 23934721 in words is "twenty-three million, nine hundred thirty-four thousand, seven hundred twenty-one".